Perhaps you should try some spelling variations:
sang tao » hang tai
nam thuc » nam thuoc, nam thu, nam tu
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
ky sang » ky nang, ky dang, ky tang
tao hoi » tao khoi, tao boi, tay hoi
hieu le » hieu ve, hieu he, hieu ly
va hanh » van hanh, va thanh, va danh
ca viet » va viet, co viet, san viet

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky sang tao hoi. hieu le ((nam thuc) or (am thuc)) va hanh vi ((ca viet) or (hoa viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky sang tao hoi. hieu le ((nam thuc) OR (am thuc)) va hanh vi ((ca viet) OR (hoa viet)).
• Adding a wildcard symbol may retrieve word variants: su sach ky sang tao hoi. hieu le ((nam thuc) or (am thuc)) va hanh vi ((ca viet) or (hoa viet))*.